baber/WOPTO huggingface dataset:
Patent GB-1457148-A (GB)
Title: Circuit arrangement for the rapid charging of an accumulator
IPC: H02J7/10
Filed: 1974-12-05
Abstract: 1457148 Battery charging systems FRANKE & HEIDECKE GmbH [trading as ROLLEIWERKE FRANKE & HEIDECKE] 5 Dec 1974 [22 Dec 1973] 52594/74 Heading H2H A system for charging a battery 6 from an A.C. supply 2 by way of a transformer 1 and, if desired a bridge rectifier 3 comprises a switch, preferably a thyristor 9 in the charging supply line 7 so that the battery receives charging current in pulses, a second thyristor 13, controlled from the battery voltage by way of a potential divider 10, 11, 12, being provided to terminate the charging process when the battery is fully charged. A resistor 18 connected between gate and anode of the thyristor 9 ensures that the thyristor turns on to pass charging current to the battery in each positive half cycle of the supply 2 only when the instantaneous value of the supply voltage exceeds the battery voltage. Thus the battery is charged in pulses having a decreasing width as the battery becomes charged. When the battery is fully charged the potential at the tapping point of the potential divider 10, 11, 12 reaches a value sufficient to cause the thyristor 13 to turn on whereupon the gate of the thyristor 9 is biased to turn that thyristor off and terminate the charging process. When the thyristor 9 turns off a light emitting diode 19 becomes illuminated to indicate that the charging process has been terminated.
Patent GB-1359740-A (GB)
Title: Polypropylene compositions
Inventor: PORTER L M
IPC: C08L23/12
Filed: 1971-11-15
Abstract: 1359740 Polypropylene compositions SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 15 Nov 1971 [16 Nov 1970] 52883/71 Heading C3P  Compositions comprise (a) 75 to 99 weight per cent of a normally solid polypropylene of average molecular weight at least 100,000 and (b) 1 to 25 weight per cent of an elastomeric selectively hydrogenated block copolymer having at least one monoalkenylarene polymer block and at least one conjugated diene polymer block, selectively hydrogenated so that at least 70% of the double bands in the diene polymer blocks and not more than 25% of the aromatic double bonds have been reduced. The block copolymers may be obtained by sequential polymerization and/or coupling. Preferred monoalkenylarene blocks are derived from styrene or α, methylstyrene, with or without conjugated dienes or vinyl pyridine, and preferred diene blocks are derived from butadiene, isoprene, 2,3-dimethylbutadiene or methylpentadiene. Selective hydrogenation may be effected in solution in the presence of a cobalt, nickel or iron carboxylate. The compositions may be moulded into shaped articles of high impact resistance and reduced blushing. Examples describe compositions comprising polypropylene and (1-6) selectively and fully hydrogenated polystyrene / polybutadiene / polystyrene block copolymers and ethylene/propylene rubbers, and (7 and 8) selectively hydrogenated diethyl adipate coupled polystyrene/polyisoprene/lithium block copolymers.
Patent GB-1358991-A (GB)
Title: Hexamethylene diamine adipate by hydrogenating adiponitrile in  the presence of adipic acid and a solvent
IPC: C07C209/48
Filed: 1970-11-06
Abstract: 1358991 Reduction catalyst IMPERIAL CHEMICAL INDUSTRIES Ltd 29 Sept 1971 [6 Nov 1970] 52942/70 Heading B1E [Also in Division C2] A transition metal boride catalyst is obtained by the inter-action of a transition metal comnound with a boron-containing reducing agent. The operation is preferably caried out in the absence of air and in the presence of a solvent, e.g. water. The catalyst may be used directly or supported on a carrier. Suitable transition metal compounds include oxides, hydroxides, alkoxides, salts, complexes containing pi- or sigma-bonded ligands or alkyl groups attached to metal, and complexes of the metals in zero valent form with olefinic and other donors. A reduced cobalt borate catalyst is prepared by precipitating cobalt borate from aqueous solution, separating and drying the precipitate and reducing it under hydrogen at elevated temperature.
Patent GB-1134218-A (GB)
Title: Oil well cement and method of making the same
IPC: C04B24/38
Filed: 1965-12-17
Abstract: 1,134,218. Oil well cement. UNITED STATES STEEL CORP. 17 Dec., 1965 [28 Jan., 1965], No. 53684/65. Heading C1H. A retarded oil well cement comprises a basic cement (defined) and 0.08 to 0.13% of a retarder consisting of 1 to 8 parts of a modified starch to 1 part of dextrine. Bentonite is optional. The cement is obtained by grinding the starch at not above 100‹ F. to - 200 mesh fineness and adding it to powdered dextrine and the cement at not above 140‹ F.
Patent GB-1076088-A (GB)
Title: Grease
IPC: C10M169/00
Filed: 1965-12-20
Abstract: Greases comprise a lubricating oil, a metal soap, a metal sulphide and an oil-soluble sulphonate of formula (RSO3)-nAn+, where A is an alkali or alkaline earth metal or ammonium or alkyl amine group containing 2-6 carbon atoms or an omega-amino alkyl amine group containing 2-6 carbon atoms, e.g. ethylene diamine, n is the valency of A and R is an alkyl, aryl, alkaryl or aralkyl group of at least 6 carbon atoms; the grease being naphthenate free.  The oil may be mineral or synthetic, e.g. ester or silicone oils.  Sulphides specified are those of antimony and molybdenum.  An extensive list of soaps is given which includes simple, mixed base and complex soaps of lithium, sodium, potassium, magnesium, calcium, barium, strontium, aluminium and lead with stearic, hydroxy stearic, dimerized fatty, hydrogenated ricinoleic and castor oil, palm oil, lard oil, fish oil and tallow acids.
Patent GB-1128367-A (GB)
Title: Improvements in or relating to the recovery of metals
IPC: C22B11/10
Filed: 1965-12-21
Abstract: 1,128,367. Recovering precious metals. SPECTRA INTERNATIONAL Inc. Dec.21, 1965 [Dec.21, 1964], No.54052/65. Heading C7D. Electro-deposited coatings of precious metals (Ag, Au, Pt, Rh, Pd, Ir, Ru or Os) are removed from their substrates (e.g. brass bronze, copper, aluminium or steel) by treating the coated article with a fluid metal solvent (Pb, Zn, Hg, Sn, Bi, Cd, Sb or alloys thereof) at a temperature below the melting point of the precious metal and of the substrate, the precious metal then being recovered from the solution by standard techniques. Fluid Pb and Zn may also be used to dissolve precious metals contained in ores.
Patent GB-1496272-A (GB)
Title: Pneumatic device for driving headed objects
IPC: B25C1/04
Filed: 1975-02-26
Abstract: 1496272 Nailing machines A J SMITH 26 Feb 1975 [13 March 1974] 54370/76 Divided out of 1496271 Heading B4C The subject matter is the same as in the parent Specification but the claims relate to the ram actuating mechanism.
Patent GB-1414997-A (GB)
Title: Rotating cylinder block pump
IPC: F04B1/20
Filed: 1972-11-27
Abstract: 1414997 Reciprocating pumps B A BOYLE 27 Nov 1972 [29 Nov 1971] 54716/72 Heading F1A A pump, e.g. for slurry, comprises a rotary cylinder block 4 with pumping pistons or plungers 3 reciprocated in cylinders 22 by double-acting motor pistons 2, ported valve plates 13, 24 being provided adjacent each end of the block for the supply and discharge of slurry and driving liquid, e.g. water, respectively. The valve plates are lubricated and sealed by driving liquid supplied from the motor cylinders, via valves 18, to valve plate recesses 19, 20. The cylinder block is driven via a pulley 5. The cylinder ports and valve plate ports are arranged such that a constant cross-sectional area of cylinders faces any port irrespective of the position of the cylinder block.
Patent GB-548376-A (GB)
Abstract: 548,376. Gyroscopic apparatus. SMITH & SONS (MOTOR ACCESSORIES), Ltd., S., and WHATLEY, H. E. April 3, 1940, No. 6044. [Class 97 (iii)] In gyroscopic apparatus having three degrees of freedom, for example directional gyroscopic apparatus, gyro verticals or artificial horizons, the rotor axis is maintained in a predetermined position by precessing torques produced by the reactions of two substantially parallel air jets issuing from nozzles located on opposite sides of the axis of the inner gimbal and impinging differentially in the same direction upon a pair of gravity-controlled shutters also carried by the inner gimbal. As shown in Fig. 2, the rotor is mounted on a vertical axis within a casing 11 constituting the inner gimbal, and the inner gimbal is mounted by means of trunnions 12 within an outer gimbal 13 pivotally mounted in bearings 14 in a fixed support. The rotor is driven by air passing through the passages 15, 16, 17 and directed on to the rotor by nozzles 18 after which the air escapes vertically from the casing 11 through nozzles 19, 20. Levers 24, 27 biased by weights 37 are pivoted on the top of the casing 11 and carry knife-edged shutters 21, 22 against which the air jets from the nozzles 19, 20 impinge. If the rotor axis tilts out of the vertical position, the levers 24, 27 move under the influence of their biasing weights 37 and vary the interception of the air jets so as to produce a precessing torque restoring the axes of the rotor to the vertical position. The nozzles and shutters may be arranged below the casing, or one set above and the other set below. In a modification, Fig. 3, shutters 41 are mounted on horizontal pivots 45 and are differentially affected by air jets from nozzles 40 to produce a restoring torque about one axis, a similar arrangement of shutters (not shown) at right-angles to that shown being provided to produce a restoring torque about the axis x ... x. The pivots 45 are adjustable vertically on the casing 11 to vary the sensitivity of control.
Patent GB-1371760-A (GB)
Title: Web tension control apparatus
IPC: B65H23/188
Filed: 1971-11-26
Abstract: 1371760 Web feeding JAMES HALLEY & SONS Ltd 10 Nov 1972 [26 Nov1971] 54966/71 Heading B8R A web tensioning apparatus associated with a rotary printing press 12, Fig. 1, printing flimsy plastics webs 10 which are drawn off a roll 11 by rollers 13 coupled to variable speed hydraulic drive 14, includes a dancing roller 17 which is supported resiliently on a piston-rod 29 provided with a fixed and a movable tab 32, 33, Fig. 3, the movable tab 33 being displaceable between stops 35, 36 fast with a support 37 which also carries a pair of orifices 40, 41 the flow from which is interrupted by the limited displacement of the tab 33 to actuate a respective one of associated valves (25, 24, Fig. 2). The valves admit compressed air to hydraulic fluid storage tanks in a control unit 18 to supply a respective end of a cylinder (19, Fig. 2) with the fluid. The cylinder piston pivots a lever 20 which controls the speed of the drive 14. The orifice 40 then obturated by the tab 33 causes the drive 14 to operate at a high speed and the orifice 41 causes the drive to operate at a low speed. The tabs 32, 33 are overlapping to prevent rapid hunting of the drive 14 which may be brought about by oscillatory motion of the short movable tab 33. The tabs 32, 33 can be replaced by a pair of concentrically mounted segments one of which is pivotable relative to the other (Fig. 5). The orifices 40, 41 may be replaced by switches or valves tipped by the tabs 32, 33.
Patent GB-1247376-A (GB)
Title: Cooled mould assembly for continuous casting
IPC: B22D11/055
Filed: 1968-11-20
Abstract: 1,247,376. Continuous casting. WIENER SCHWACHSTROMWERKE G.m.b.H. 20 Nov., 1968 [15 Dec., 1967], No. 54974/68. Heading B3F. A tapered graphite mould 1, e.g. for casting noble metal strip, is contained between conically recessed cooling elements 2a, 2b, 2c and an end cooling device 3. Screws 5 bear on a yoke 4 and force a pressure plate 6 against the end cooling device 3. The cooling elements 2a, 2b and 2c, which are preferably made of differing materials, are thermally separate from each other and contain cooling ducts 9 which are of different diameters and may be operated independently of each other. The end cooling device 3 comprises elements 3a and 3b each containing cooling ducts 7, 8, also of different diameters. From the duct 8, one or more cooling fluids e.g. inert gases, oxygen, water, are blown on to the casting leaving the mould.
Patent GB-1408164-A (GB)
Title: Self-propelled missile
IPC: F42B10/14
Filed: 1972-11-29
Abstract: 1408164 Missiles MESSERSCHMITTBOLKOW-BLOHM GmbH 29 Nov 1972 [4 Dec 1971] 55187/72 Heading F3A A self-propelled missile comprises a plurality of fins which are separately erected at various stages in its flight so as to adjust the stability of the missile in accordance with the changing position of the centre of gravity and the Mach number. The erection of the fins adjusts the centre of pressure of the missile. The fins may be slightly canted so as to cause the missile to rotate during flight. Some of the fins may be positioned at the tip of the missile as well as at the rear. The missile is arranged to have neutral stability during the initial part of its flight, so as to minimize the effects of winds on its trajectory, but is given greater stability as its Mach number increases.
Patent GB-1368266-A (GB)
Title: Insect control
IPC: C07C67/00
Filed: 1971-11-29
Abstract: 1368266 Di-olefinic compound ZOECON CORP 29 Nov 1971 [1 Feb 1971 (3) 8 Oct 1971] 55200/71 Heading C2C [Also in Divisions A5 and C5] Novel compounds of formula where n is 0 or 1, R<SP>1</SP>, B<SP>2</SP>, R<SP>4</SP> are C 1-6  alkyl, R<SP>3</SP>, R<SP>5</SP>, R<SP>12</SP>, R<SP>13</SP> and R<SP>14</SP> are H or C 1-6  alkyl, Q is -COOR<SP>7</SP>, -COX, -COOSR<SP>15</SP>, -COR<SP>15</SP> or -CONR<SP>8</SP>R<SP>9</SP>, R<SP>7</SP> is H, C 1-6  alkyl or C 4-8  cycloalkyl, R<SP>15</SP> is C 1-6  alkyl or cycloalkyl, R<SP>8</SP>, R<SP>9</SP> are H, C 1-6  alkyl, C 1-6  alkenyl or cycloalkyl, and X is Br or Cl, are prepared in the ester form (a) by reacting an aldehyde or ketone of Formula I with a carbanion of formula (b) by reacting compound I with compounds of formula to give the unsaturated ketone III which is then reacted with the appropriate phosphonate carbanion or ylid, (c) by reacting  compound I in which R<SP>13</SP> is H with R<SP>1</SP>-C#C-M to give the alkynyl alcohol IV  which is reacted with an ortho ester to give the 3,4-dienoate, and this is re-arranged to the 2,4- dienoate, (d) by esterifying the acid with alcohol, or (e) by reacting the acid halide with alcohol. Other compounds are prepared as follows: acids by hydrolysis of esters with optional conversion into metal salt form; acid halides by reaction of acids with oxalyl chloride; thioesters by reaction of acids with mercaptides, or mercaptans; ketones by reaction of esters, acids or acid halides with organoli; amides (a) by reaction of acid halides with NH 3  or amines, (b) by reaction of ketone IV with a phosphonoacetamide, or (c) by reaction of alcohol IV with an amide ketal to give the 3,4-dienamide which is re-arranged. Aldehydes I are prepared by reacting carbonyl compound X with an alkoxymethyltriphenyl phosphonium halide to give a compound in which m = 0 and then repeating the process to give m = 1 &c. Ketones I are prepared from the corresponding aldehyde via the alcohol. The compounds are insecticides.
Patent GB-1368782-A (GB)
Title: Metal cladding sheets
IPC: B21D13/10
Filed: 1971-12-06
Abstract: 1368782 Bending M SEEFF and S SEEFF 6 Dec 1971 [12 Dec 1970 24 June 1971] 56565/71 Heading B3E A corrugated metal sheet 1 is bent in a direction transverse to the corrugations 2, 3 by pressing ribs 8 in the side portions 4 of the corrugations 2, 3 and in the intermediate portions 5 of the corrugations 3. The ribs are formed by a punch and die (Fig. 4) in rows either by forming each row or a plurality of rows in one operation which is repeated at spaced intervals along the sheet in a direction parallel to the corrugations. The ribs are discontinued at portions 12 in the intermediate portions 5 to define a drainage channel.
Patent GB-1408252-A (GB)
Title: Photoconductive element
IPC: G03G5/10
Filed: 1973-12-10
Abstract: 1408252 Photo-conductive belt OCE-VAN DER GRINTEN NV 10 Dec 1973 [22 Dec 1972] 57169/73 Headings G2C and G2H A zig-zag folded belt, of the kind described in Specification 1369122, comprises a black carbon aceous paper support and a photo-conductive layer. Preferably a carbon-filled film forming polymer, e.g. cellulose acetate butyrate, layer is interposed between the support and the photo-conductive layer. The photoconductive layer is preferably sensitized zine oxide in a binder e.g. polyvinyl acetate.
Patent GB-574836-A (GB)
Abstract: 574,836. Igniting systems. BRITISH THOMSON-HOUSTON CO., Ltd., ROBINSON, T. F., COE, R. T., and WELCH, D. F. May 18, 1942, No. 6719. [Class 7 (iv)] In a high-frequency system having one or more spark gaps G in the high-tension circuit, and in which relatively low-tension current from a distributer D is supplied to individual high-tension transformers T for each plug, for example as in Specification 529,458, a resistance RP of predetermined value is connected in shunt with each spark plug SP for stabilizing the breakdown voltage of each gap. As shown, the secondary winding S of each transformer T is connected to a plug SP through a gap G and a series inductance LS, and a condenser CS is connected across the winding S. Each unit U, comprising the transformer T, condenser CS, gap G and inductance LS, is preferably enclosed in a sealed metal case M as an integral part of the plug, or mounted close to the plug and connected to it by a screened cable of low self-capacity. 'The resistance RP may be provided by leakage in the plug insulator. Specification 574,833, [Group XL], also is referred to. Reference has been directed by the Comptroller to Specification 542,458.
Patent GB-1292118-A (GB)
Title: Improvements in or relating to methods of controlling the temperature in melt spinning-head heaters
IPC: G05D23/19
Filed: 1969-11-25
Abstract: 1292118 Melt-spinning head heaters TEIJIN Ltd 25 Nov 1969 [26 Nov 1968] 57676/69 Heading B5B In melt spinning apparatus of the type in which a group of spinning heads are surrounded by a liquid heating medium having electric heaters immersed therein and contained in a horizontal jacketed chamber having an upper portion enclosing a vapour space and a lower portion containing the liquid heating medium, each spinning head being positioned between two heaters, the temperature is controlled by a method comprising switching on and off automatically the current simultaneously supplied to all the heaters, the switching on and off being carried out by means of a temperature controller actuated by a temperature-sensing device in the liquid heating medium in the chamber, the heat output of the heaters at the ends of the heating chamber being adjustable in such a manner that the individual heat output thereof is 30 to 90% of the heat output of each of the other heaters, the heat output of each of the other heaters being substantially equal. This may be effected by varying the strength of the current supplied to the heaters at the end of the chamber, preferably independently of the current supplied to the other heaters, which itself may be adapted to be adjustable. As shown in Fig. 3, molten polymer delivered to spinning heads 2 housed in jacketed chamber 14 through feed pipes 1 and 3 and spinning pumps 4 is extruded through spinnerets 5 to form filaments 13. The lower portion B of the chamber 14 is occupied by a heating liquid and the upper portion A by the vapour of the liquid. The liquid is heated by a row of electric immersion heaters 15 positioned so that they alternate with spinning heads 2, the first and last of the row of heaters being positioned between a spinning head and an end wall of the chamber 14. As shown in Fig. 4 the strength of the current supplied to the heaters at the ends of the chamber 14 can be adjusted independently of the current supplied to the other heaters by adjusting the current regulator 19 and likewise the current supplied to the other heaters can be varied by adjusting the current regulator 20. The current common to these regulators is controllably switched on and off by the control switch 18 operated by the temperature controller 17 actuated by the temperature sensing means 16 in the chamber 14.
Patent GB-1206769-A (GB)
Title: Housing for roller or catch-bolt of a sliding-door fitting
IPC: C21D9/40
Filed: 1967-12-20
Abstract: 1,206,769. Bolts; runners for sliding doors. T R O L A - KUNSTSTOFFERZEUGNISSE G.m.b.H. & CO. 20 Dec., 1967 [20 Dec., 1966 (2)], No. 57926/67. Headings E1J and E2A. A housing for a roller or a catch-bolt, for a sliding-door, comprises a body, having a receiving space for the roller or the catchbolt, defined by two substantially parallel side walls and a curved peripheral wall, at least part of the peripheral wall having resiliently deformable external teeth 15 running substantially parallel to the side walls, the teeth being intended to retain the housing in a cavity in the sliding-door, the housing having a peripheral aperture through which the roller or catch-bolt projects when mounted in the housing. The housing is made of a resilient plastics material. When the housing is intended to receive a catch bolt 4 the outer wall 5 has a longitudinal slot 6 through which a projection of the bolt extends the slot having detents 8, 9 and the projection having portions which engage the detents so that the bolt is retained in either of two alternative positions. When the housing is intended for a roller it is provided with slots for receiving the end portion of an axle of the roller.
Patent GB-1329286-A (GB)
Title: Ring drilling device
IPC: E21B15/04
Filed: 1970-12-07
Abstract: 1329286 Ring drilling device TAMPELLA AB OY 7 Dec 1970 [19 Oct 1970] 58005/70 Heading B3C A ring drilling device for operating in a tunnel comprises a boom 14 rotatable about its longitudinal axis, an elongate boom head pivotally mounted on the boom for a movement about an axis 19 perpendicular to the boom, and a cradle 27 for a feed device 29 of a rock drill 28 mounted transversely on the boom head so as to be rotatable about its longitudinal axis. The boom head comprises a bell crank lever 20, 21 which is pivotable by a pressure cylinder 22. A housing 24 of a turning cylinder is journalled to the boom head so that when pressure medium is supplied to either end of the housing a piston moves accordingly so that toothed piston-rod 24 forces the housing to revolve about the toothed segment 26 of arm 20. The housing can move through 360 degrees. Boom 14 can be rotated through 360 degrees by a turning cylinder 16. Fig. 3 shows two devices mounted on a carriage which can be firmly located in a tunnel by stays extending from pressure cylinders 12, 13. The feed device 29 is moved by means of a displacement cylinder 30.
Patent GB-1167600-A (GB)
Title: Character Generation by Laser-Mode Selection
IPC: G09F9/305
Filed: 1967-12-21
Abstract: 1,167,600. Generating characters by laser means. XEROX CORP. 21 Dec., 1967 [30 Dec., 1966], No. 58024/67. Heading G5C. [Also in Divisions G2 and H1] Character generation apparatus comprises lasers 3 which generate radiation in a plurality of modes and associated therewith a device 7 controlled by input logic 9 and a flux director 5. The flux director includes a box-like structure (16), (Fig. 2, not shown), containing a fibre-optic bundle (17), the individual fibres being so positioned at the input (18) and output (19) ends respectively of the box (16) that energy associated with a specific mode appears at the output end in the pattern of a specific character. These characters are imaged on a xerographic drum 13, stepped by a device 15 controlled by input logic 9. In another embodiment (Fig. 7, not shown), the flux director includes at its output end an alpha-numeric matrix (41), laser light being directed to characters associated with particular modes by light pipes (43) Fig. 8 (not shown), the characters then being imaged on a xerographic drum (51), Fig. 7 (not shown), by a lens (49) and aligning plates (50, 52). The xerographic drum may be replaced by a drum carrying a sheet or coating of photographic emulsion.